Conical helix.



C. D. HER'ROLD.

K CNICAL HELIX. APPLICATIONHLED Junz. 1913.

l l45,36 Patented July 6, 1915.

' @g1g l RNEY di@ F1? f niais-'an sra CHARLES i:i. HERiioLD, or sian Josn,l CALIFORNIA.

conical. HELIX.

inigialsee.

T aZLfirif/i/i'i't '/iag/lcoiicern:

i Be* it known ,that I, CHARLES D.- HERROLD,

a' 4.citizen of the United States, residing at San Jose, inthe county of Santa Clara and 5 State ofCalifornia, haveinventednew and useful Improvements-in Conieal Helixes, of

Y Which-the followinfr is a' specification.

.This invention relates to Va conical-shaped inductive coupling. l

a simple, efiieient, easily adpisted, inductive vcoupling .of a conical shape, having separate primary and secondary windings`adljustablewith relation toeachother,which 'J5 are sopositioned that the winding surfaces' Will at all times be parallel, and which may be given the greatest range of coupling, and

in which the loosest coupling may b e `accomplishedavith'the ma'ximunitransfer of energ'y.

" Another object .of the invention is to provide conical-shaped windi ngif-supported frames which are so constructed' that variousformsfoffthe windings may be applied, '25 such as 'ribbon or separately; insulated "li stranded windings, which may be so posi- "tioned that electrostatic selfeinduction inlay' be reduced to a minimum.v A further object of the-invention 'is to 30 provid'e means for cutting out the .dead endsv of the windings after the .coupler hasbcen adjusted, thuspreventingany needless radiation and Waste of energy in vthe inactive' vends of the primary and secondary Wind- 35.ings,

` The'invention consists ofthe parts and the-construction and combination of parts 'as hereinafter more fully. described and.-

.1 claimed, having .reference totheaecoinpa- 40 nying drawings, in Wlnche@ Figure lis a'perspective view of'the conical-shaped inductive coupling or helix. Fig.

2 is a partial sectiono same. Fig. 3 is a perspective View of thefconnecting clips appliedtothew'vindings ofthe primaryand secondaryindiictors Referring-to Figs. l and ings, it vWill-'be seen .that an inductive cou- -pli'ng is provided having primaryand'secondary\\iiiiclings A and/ B of a conical 'shapeg" the secondary vwinding of which is carried by a conical-shaped skeleton frame,

` generally indicated4 at'2, cfonsisting'of a v :liange-shaped ring'S and a head portion .4,

5f which are..c onneetedvv 'together by radially disposed l arms 5; lprovided for the purpose Specicationof Letters Patent.

....Theobject-of the invention` is to provide:

re-f ne draw..A

of supporting-the conductor l5,\vliicli ..is

here shou'nas.consisting of a ribbon-shaped rai-enfui Juiye, 1915. 'Appiicacion ined June 2,1913. sriai`No.771,2'42.

spiral-'foi'iiied winding ha vingits largest d1 laincter at the base, tl ic cores gradually decreasing in` circuniicerence until the. niini` niuin is' reached' at the upper end, near the head it, ot' the supporting fraine. The frame-as a ivliole may' besupport-ed on stancliions' secured 'upon a suitable.base or support, not heishown. .The primary windingis carried b va siiii'ilarly-shaped and (a'iiistrueted fi'ainc if. adjiisti'ibly slipported with-.relation to theI frame 2, the lower flange 3 is slida-blvmountedand 'guided on the stancliionsi', while the upper {mrt-1011.01' head -l is srcuredtdan adiustfingscrew 8 slidably'mount'ed in the head L of the frame-2; the position of the frame orfpriinary winding A withrelation to the `upper frame 2 -and secondary winding B being adjusted by a winged-nut T'wc conical-shaped spiral windings are thus pro# duced whichare adjustable with .relation to .each other, being always 'niovable'in theline conunon to their axes. The winding surfaces willthus remain parallel at all times, and" may be adiusted to give the greatest 'range offeoiipling,

Awith uniform transfer of energy.

By referring to Fig. 1, it will be seen tliatl each COilof the primary and' secondary windings is separated at a point, indicated highly ellieient,asit'becomes possible to disco'iii "i ect the inactive'ends of theprimary and secondary'coils by. simply removing the clips below; and ahove the `point of tuning,

as in;-

'dicated at 1 4 and 145.- 'It thus becomes possi;

. ble toeut out the dead ends and prevent'the iiseless-iadia'tion and waste oieenergy which would'otherwisetalte place. The adjusting l' mechanism interposed betweenthe primary and secondary windingspermits the 'greatest range of coupling, and at the saine times insures parallelism' between the enacting sur;` faces. `The position of the ribbon-shaped windings with relation vto each" other produces the highest efficiencypossible,l as the. lines of. force orniagnetic fux radiating' from the primary winding will be intercepted or cut at all points by the secondary winding. A. further adjustment or tuning may he secured by providing the sliding circuit terminal connections, indicated at 16; these maybe moved from one position to another upon the ribl'Jon-sliaped bands to Secure thev desired :uljustmcnt '.lhe radially-dis1 osed arms, which are provided for the purpose of supporting the uindings. are preferably constructed of a suitable l'orm ol insulating material, and may be .slotted in dill'erent ways to receive various types ot' coiid1ictms,such asa separately insulated strzinded conductor, or the ribbon type.

I wish it uiulerstood that various changes in lorni, proportions and minor details yof construction may be resorted to within the scope of the appended claims, and that I -do not wish to limit myselfl to the specific design and construction here shown.

Haring thus described my iny'entiomwhat l claim and desire to secure by Letters Patent is:

1. lIn an inductive coupling, the combination of conical-shaped spirally-wound primary and secondary windings, separated and insulated from cach other, removable i U-shapcd pinch clips connecting the turns in each winding, and means for separating the windings with relation to each other on the line of their common axis.

2. A loose-coupled oscillating transformer, comprising a'primary and secondary Winding of conical shape, means for breaking the circuit between the individual turns in each winding, and means for Varying the distance between the windings.

3. A loose-coupled oscillating transformer, comprising a primary and secondary Winding of conical shape, means for breaking the circuit between the individual turns in each winding, means for varying the distance between the windings, means for connecting one conical winding to a receptor of radioenergy, and the other conical Winding to the means to cut out the unopposed windings at the dead ends.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

CHARLES D. HERROLD.

Witnesses MARGARET LEAL, LURLINE CAMEO.Y 

